Power plant boiler flue gas condensation is heat energy -saving system again

The utility model relates to a system is used multipurposely to the boiler flue gas, discloses a power plant boiler flue gas condensation is heat energy -saving system again very much. This power plant boiler flue gas condensation is heat energy -saving system again includes boiler and the chimney connected through the flue, has set gradually air heater, electrostatic precipitator and desulfurizing tower, its characterized in that along flue gas flow direction on the flue: be provided with the cooling heat exchanger in the flue between air heater and the electrostatic precipitator, be providedwith flue gas reheater in the exhaust pass of desulfurizing tower, be provided with flue gas condenser in the flue between desulfurizing tower and the flue gas reheater. The utility model discloses simple structure, reasonable in design, effectively the condensation retrieve the clean flue gas area water of desulfurization, solve the chimney and emit white cigarette problem, effectively reduce the effluent concentration